Sigmasoft simulates the following processes: filling, packing, cooling, venting, shrinkage, warpage, stress, ejection, post molding, hot runners, multi-cycle, multi-component, and insert over-molding.
Sigmasoft filling and packing simulation predicts temperatures, pressures, velocities, crystallization, and shearing at any location at any time to determine manufacturability and ensure a balanced mold design. Weld lines, sink marks, voids, and air traps are also valuable outputs to eliminate the potential for part defects.
The thermal distribution inside an injection mold depends on many factors. In the same way as the polymer flows three dimensionally into the cavity, the heat also flows three dimensionally between inserts, part, mold, and thermal control. A multi-cycle analysis enables you to simulate the quasi-stationary state of a m old including all local temperature differences and consequently to perform a much more precise filling simulation based on the steady state temperature distribution. Sigmasoft accurately calculates the complex thermal distribution in the mold coupled with polymer flow.
The software simulates the impact of the ejection system on the part and offers insight into the ejection system design. Ejection forces are predicted to understand their impact on final part quality. The ejection system may also be evaluated to determine the porper quantity of ejector pins.
Proper venting is critical to the injection molding process. Without proper venting, quality and flow imbalances are common issues. Sigmasoft lets you model vents into the simulation to optimize location and size, and view the impact of trapped air on the flow front. View trapped air pockets, air pressure, and air temperature in the cavity.
The software predicts post-ejection stress relaxation and crystallization of the part which often provides a more accurate warpage prediction. A second heat cycle may also be simulated, taking into account the entire process history.
3D CAD models of the part geometry and the entire mold if needed can be imported directly into Sigmasoft in multiple formats including STEP, STL, SAT, Pro/E, or Catia. The software also includes tracer particles to help visualize what is happening behind the flow front. These tracers are shown during the filling, packing, and cooling processes.